Qa

Front 1

sensitivity

Back 1

the ability of a test to detect disease when disease is present. how many positive noninvasive US test were confirmed as positive by the gold standard?

Front 2

sensitivity equation

Back 2

true positive÷ true positive+ false negatives

Front 3

specificity

Back 3

the ability of a test to indicate the absence of disease when disease is present. How many of the negative US tests were correctly identified based on the gold standard

Front 4

specifity equation

Back 4

true negatives/true negatives + false positives

Front 5

positive predictive value

Back 5

the % of patients who have positive noninvasive test results who actually have disease present. What % of your results predicted abnormality?

Front 6

PPV equation

Back 6

true positives/ false positives + true positives

Front 7

Negative predictive value

Back 7

the % of patients who have negative noninvasive test results who do not have disease present. What % of your results predicted absence of disease?

Front 8

NPV

Back 8

number of true negatives ÷ number of true negatives + number of false positives

Front 9

accuracy

Back 9

the % of correct noninvasive diagnoses. How good is the noninvasive test at both detecting and ruling out disease?

Front 10

accuracy equation

Back 10

true positives + true negatives ÷ true positives + false negatives + true negatives + false negatives